JPH08277341A - Production of microporous sheet - Google Patents
Production of microporous sheetInfo
- Publication number
- JPH08277341A JPH08277341A JP10467595A JP10467595A JPH08277341A JP H08277341 A JPH08277341 A JP H08277341A JP 10467595 A JP10467595 A JP 10467595A JP 10467595 A JP10467595 A JP 10467595A JP H08277341 A JPH08277341 A JP H08277341A
- Authority
- JP
- Japan
- Prior art keywords
- microporous sheet
- resin
- dispersion
- average particle
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 13
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 8
- 229920000620 organic polymer Polymers 0.000 claims abstract description 6
- 238000000151 deposition Methods 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 abstract description 17
- 239000004677 Nylon Substances 0.000 abstract description 5
- 229920001778 nylon Polymers 0.000 abstract description 5
- 239000003960 organic solvent Substances 0.000 abstract description 5
- 239000002649 leather substitute Substances 0.000 abstract description 3
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 7
- 229920000728 polyester Polymers 0.000 description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920001410 Microfiber Polymers 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920002689 polyvinyl acetate Polymers 0.000 description 4
- 239000011118 polyvinyl acetate Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical group O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003021 water soluble solvent Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は微多孔性シートの製造方
法に関する。さらに詳しくは、機械的性質、透湿性等の
諸性能に優れた微多孔性シートを高い生産性で製造する
方法に関するものである。得られた微多孔性シートは、
天然皮革代替品、繊維コーティング製品等として利用さ
れる。FIELD OF THE INVENTION The present invention relates to a method for producing a microporous sheet. More specifically, the present invention relates to a method for producing a microporous sheet excellent in various properties such as mechanical properties and moisture permeability with high productivity. The resulting microporous sheet,
It is used as a natural leather substitute and fiber coating product.
【０００２】[0002]
【従来の技術】従来、微多孔性シートの製造方法として
は、ポリウレタン等の有機高分子を水溶性有機溶剤の
溶液として繊維素材に付与し、湿式凝固する方法、乾
式法（例えば特公昭５１ー４１０６３号公報および特開
昭５１ー４１０６３号公報に記載の方法）、ポリウレ
タン微粒子を含有するポリウレタン樹脂のＷ／Ｏ型エマ
ルションを用いる方法（例えば特開昭６２ー２７３２２
０号公報に記載の方法）など知られている。2. Description of the Related Art Conventionally, as a method for producing a microporous sheet, an organic polymer such as polyurethane is applied to a fiber material as a solution of a water-soluble organic solvent and wet-coagulated, or a dry method (for example, JP-B-51- No. 41063 and JP-A No. 51-41063), and a method using a W / O type emulsion of polyurethane resin containing polyurethane fine particles (for example, JP-A No. 62-27322).
The method described in Japanese Patent No. 0) is known.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記
の湿式法では、使用される有機溶剤が引火性が強くかつ
毒性が強いため、火災の危険性や溶剤の回収コストが高
い等の問題；の乾式法では、多量の親水性樹脂を使用
するため得られるシート材料の機械的性質が充分とはい
えず、かつその製造方法は煩雑であるとともに乾燥方法
に厳密な温度管理が必要であり、しかも長時間を要する
ので非常に生産性が低い等の問題；のポリウレタン微
粒子を含有するポリウレタン樹脂のＷ／Ｏ型エマルショ
ンを用いる方法では、の場合と同様、使用される有機
溶剤の引火性および毒性等の問題があった。However, in the above wet method, since the organic solvent used is highly flammable and highly toxic, there are problems such as fire risk and high solvent recovery cost; In the method, since a large amount of hydrophilic resin is used, the mechanical properties of the obtained sheet material cannot be said to be sufficient, and the manufacturing method thereof is complicated, and the drying method requires strict temperature control, In the method using a W / O type emulsion of a polyurethane resin containing polyurethane fine particles, the productivity is very low because it takes time; There was a problem.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、上記問題
点を解決する方法について鋭意検討した結果、有機溶剤
を使用する必要がなく、かつ生産性良く微多孔性シート
を製造できる方法を見いだし、本発明に到達した。すな
わち本発明は、有機高分子の粉体（Ａ）を水性樹脂
（Ｂ）に、固形分重量比１００：（３〜３００）で分散
させ、これを基材に付着せしめた後、乾燥することを特
徴とする微多孔性シートの製造方法。Means for Solving the Problems As a result of intensive investigations by the present inventors on a method for solving the above-mentioned problems, a method for producing a microporous sheet which does not require the use of an organic solvent and which can be produced with high productivity has been found. Found and arrived at the present invention. That is, according to the present invention, the organic polymer powder (A) is dispersed in the aqueous resin (B) at a solid content weight ratio of 100: (3 to 300), and this is adhered to a substrate and then dried. A method for producing a microporous sheet, comprising:
【０００５】本発明における有機高分子の粉体（Ａ）と
しては、例えばポリエチレン、ポリプロピレン、ポリブ
タジエン、ポリスチレン、ナイロン、ポリウレタン、ポ
リアミド、ポリアクリル樹脂、ポリエステル、ポリ酢酸
ビニル樹脂、エチレン／酢酸ビニル共重合体、ポリ塩化
ビニル樹脂、エポキシ樹脂等の水に不溶性の樹脂の粉体
が挙げられる。これらの樹脂うち好ましいものは、ナイ
ロン、ポリウレタン、ポリアクリル樹脂、ポリ酢酸ビニ
ル樹脂およびポリ塩化ビニル樹脂である。該（Ａ）の平
均粒径は、通常０．１〜５００μｍである。平均粒径が
０．１μｍ未満では微多孔性シートが形成されず、５０
０μｍを越えると得られる微多孔性シートの機械的強度
が低下する。Examples of the organic polymer powder (A) in the present invention include polyethylene, polypropylene, polybutadiene, polystyrene, nylon, polyurethane, polyamide, polyacrylic resin, polyester, polyvinyl acetate resin, ethylene / vinyl acetate copolymer. Examples thereof include powders of water-insoluble resins such as coalesce, polyvinyl chloride resin, and epoxy resin. Among these resins, preferred are nylon, polyurethane, polyacrylic resin, polyvinyl acetate resin and polyvinyl chloride resin. The average particle size of the (A) is usually 0.1 to 500 μm. If the average particle size is less than 0.1 μm, a microporous sheet will not be formed, and
When it exceeds 0 μm, the mechanical strength of the obtained microporous sheet is lowered.
【０００６】水性樹脂（Ｂ）としては、例えばポリウレ
タン樹脂、ウレア樹脂、ポリアクリル樹脂、ポリスチレ
ン樹脂、ポリエステル樹脂、ポリアミド樹脂、ポリイミ
ド樹脂、ポリアミノ酸樹脂、ポリ酢酸ビニル部分ケン化
物、エチレン／酢酸ビニル樹脂、ポリ塩化ビニル樹脂お
よびエポキシ樹脂の水溶液もしくは水性分散体；ＳＢ
Ｒ、ＮＢＲ、ＥＰＲ、ポリブタジエンゴム、ブチルゴ
ム、天然ゴム等のゴムラテックス等が挙げられる。これ
らのうち好ましいものはポリウレタン樹脂、ポリアクリ
ル樹脂、ポリアミド樹脂およびポリ酢酸ビニル部分ケン
化物の水溶液もしくは水性分散体、ならびに、ＳＢＲお
よび天然ゴムのラテックスであり、特に好ましいものは
ポリウレタン樹脂の水性分散体である。Examples of the aqueous resin (B) include polyurethane resin, urea resin, polyacrylic resin, polystyrene resin, polyester resin, polyamide resin, polyimide resin, polyamino acid resin, partially saponified polyvinyl acetate, ethylene / vinyl acetate resin. , Aqueous solution or dispersion of polyvinyl chloride resin and epoxy resin; SB
Examples thereof include rubber latexes such as R, NBR, EPR, polybutadiene rubber, butyl rubber and natural rubber. Among these, preferred are aqueous solutions or aqueous dispersions of polyurethane resins, polyacrylic resins, polyamide resins and partially saponified polyvinyl acetate, and latexes of SBR and natural rubber, and particularly preferred are aqueous dispersions of polyurethane resins. Is.
【０００７】（Ａ）と（Ｂ）の固形分重量比は、通常１
００：（３〜３００）、好ましくは１００：（１０〜１
００）である。（Ｂ）の比率が３未満では、（Ｂ）によ
るバインダー効果が乏しくなり、得られるシートの機械
的強度が低下し、３００を越えると、得られるシートの
透湿性が低下する。The solid content weight ratio of (A) and (B) is usually 1
00: (3 to 300), preferably 100: (10 to 1)
00). If the ratio of (B) is less than 3, the binder effect due to (B) will be poor, and the mechanical strength of the obtained sheet will decrease, and if it exceeds 300, the moisture permeability of the obtained sheet will decrease.
【０００８】本発明において、（Ａ）と（Ｂ）との配合
物を基材に付着せしめるに際し、必要に応じて、メタノ
ール、エタノール等の水溶性溶剤、アルキルフェノール
のアルキレンオキシド付加物等の界面活性剤、カルボキ
シメチルセルロース等の増粘剤、シリコン系化合物等の
消泡剤、フッ素系化合物等のレベリング剤、ポリエポキ
シ化合物、アミノ樹脂等の架橋剤、顔料、マイグレーシ
ョン防止剤等が適宜配合される。In the present invention, when the mixture of (A) and (B) is attached to the substrate, a surface-active agent such as a water-soluble solvent such as methanol or ethanol, an alkylene oxide adduct of alkylphenol, etc. may be used, if necessary. Agents, thickeners such as carboxymethyl cellulose, antifoaming agents such as silicon compounds, leveling agents such as fluorine compounds, polyepoxy compounds, cross-linking agents such as amino resins, pigments, migration inhibitors, and the like.
【０００９】微多孔性シートの基材としては、例えば天
然繊維、半合成繊維、合成繊維などの編布、織布または
不織布や、離型紙、プラスチックフィルム、金属板、ガ
ラス板などが用いられる。As the base material of the microporous sheet, for example, knitted cloth, woven cloth or non-woven cloth of natural fiber, semi-synthetic fiber, synthetic fiber, release paper, plastic film, metal plate, glass plate and the like are used.
【００１０】基材に付着せしめる方法としては、（Ａ）
と（Ｂ）とからなる配合物を基材に含浸、コーティン
グ、スプレーなどの方法で処理後、必要に応じて過剰分
を搾液した後、加熱乾燥する方法が挙げられる。乾燥条
件は、基材、付与する分散液組成、付着量等により異な
るが、通常、６０〜１８０℃にて１０秒〜１０分程度で
ある。乾燥温度が（Ａ）の熱軟化点以上となると、粉体
の融着を生じ、得られる微多孔性シートの柔軟性や透湿
度を低下させるため、熱軟化点の１０℃以上低い温度で
実施する。また、基材に付着させる該配合液の量は、そ
の目的に応じて任意に選択されるが、基材１ｍ2当り通
常５〜３０００ｇである。As a method of adhering to the substrate, (A)
Examples include a method in which a base material is treated with a composition comprising (B) and (B) by a method such as impregnation, coating, or spraying, and then excess liquid is squeezed if necessary, followed by heating and drying. The drying conditions vary depending on the substrate, the composition of the dispersion liquid to be applied, the amount of adhesion, etc., but are usually about 10 seconds to 10 minutes at 60 to 180 ° C. When the drying temperature is equal to or higher than the thermal softening point of (A), fusion of the powder occurs, and the flexibility and moisture permeability of the resulting microporous sheet are reduced. To do. The amount of the compounded liquid adhered to the base material is arbitrarily selected depending on the purpose, but is usually 5 to 3000 g per 1 m 2 of the base material.
【００１１】付着せしめる方法において、（Ａ）と
（Ｂ）とからなる配合物を一度付着せしめて乾燥後、こ
の上にさらに平均粒径の異なる（Ａ）と（Ｂ）の配合物
を付着せしめて乾燥し、多層構造のシートとすることも
可能である。たとえば、平均粒径が５〜５００μの
（Ａ）を（Ｂ）に分散させ、これを基材に付着せしめて
乾燥後、この上にさらに平均粒径が０．１〜５０μの
（Ａ）を（Ｂ）に分散させたものを付着せしめて乾燥す
ることにより、得られる微多孔性シートが天然皮革独得
の反発弾性を有し、かつ折り曲げ時に皺が形成されるな
ど高度に天然皮革と類似の物性を発現する。In the method of adhering, the composition comprising (A) and (B) is once adhered and dried, and then the composition of (A) and (B) having different average particle diameters is further adhered thereon. It is also possible to dry it to obtain a multilayered sheet. For example, (A) having an average particle size of 5 to 500 μ is dispersed in (B), and this is adhered to a substrate and dried, and then (A) having an average particle size of 0.1 to 50 μ is further added. By depositing the dispersion in (B) and drying it, the resulting microporous sheet has unique repulsion resilience of natural leather and is highly similar to natural leather in that wrinkles are formed during folding. Express physical properties.
【００１２】[0012]
【実施例】以下実施例により本発明を更に説明するが、
本発明はこれに限定されるものではない。実施例中の部
は重量部、％は重量％を示す。なお、実施例中に用いら
れる各測定値の測定方法は下記の通りである。 透湿度：ＪＩＳ Ｚ ０２０８Ｂ（ｇ／ｍ2・２４ｈ） 柔軟性：ハンドリングによる触感The present invention will be further described with reference to the following examples.
The present invention is not limited to this. Parts in the examples are parts by weight, and% is% by weight. In addition, the measuring method of each measured value used in an Example is as follows. Water vapor transmission rate: JIS Z 0208B (g / m 2 · 24h) Flexibility: Tactile sensation by handling
【００１３】実施例１ ナイロン樹脂の粉体（平均粒径：５０μ、熱軟化点：１
５０℃）１００部、ポリウレタン樹脂エマルション［三
洋化成工業（株）製「パーマリンＵＡ−１５０」、固形
分濃度：３０％）１００部および水２４０部を混合分散
させ、これにカルボキシメチルセルロース３部を加え
て、固形分濃度３０％、粘度５０００ｃＰの水性分散液
を得た。これをポリエステル（ＰＥＴ）極細繊維不織布
上に、厚さ１ｍｍとなるようコーティングし、１００℃
にて１０分乾燥して微多孔性シートを得た。Example 1 Nylon resin powder (average particle size: 50 μ, thermal softening point: 1
50 parts), 100 parts of polyurethane resin emulsion [Sanyo Kasei Kogyo Co., Ltd. "Permarin UA-150", solid content concentration: 30%) 100 parts and 240 parts of water are mixed and dispersed, and 3 parts of carboxymethyl cellulose is added thereto. Thus, an aqueous dispersion having a solid content concentration of 30% and a viscosity of 5000 cP was obtained. This is coated on a polyester (PET) ultrafine fiber nonwoven fabric to a thickness of 1 mm, and the temperature is 100 ° C.
And dried for 10 minutes to obtain a microporous sheet.
【００１４】実施例２ ポリウレタン樹脂の粉体（平均粒径：１００μ、熱軟化
点：１４０℃）１００部、ポリウレタン樹脂エマルショ
ン［三洋化成工業（株）製「パーマリンＵＡ−１５
０」、固形分濃度：３０％）１００部および水２４０部
を混合分散させ、これにカルボキシメチルセルロース３
部を加えて、固形分濃度３０％、粘度５０００ｃＰの水
性分散液を得た。これをＰＥＴ極細繊維不織布上に、厚
さ１ｍｍとなるようコーティングし、１００℃にて１０
分乾燥して微多孔性シートを得た。Example 2 100 parts of polyurethane resin powder (average particle size: 100 μ, thermal softening point: 140 ° C.), polyurethane resin emulsion [“Permarin UA-15” manufactured by Sanyo Kasei Co., Ltd.]
0 ", solid content concentration: 30%) 100 parts and water 240 parts are mixed and dispersed, and carboxymethyl cellulose 3
Parts were added to obtain an aqueous dispersion having a solid content concentration of 30% and a viscosity of 5000 cP. This is coated on a PET ultrafine fiber non-woven fabric to a thickness of 1 mm, and the temperature is 10
Minute drying was performed to obtain a microporous sheet.
【００１５】実施例３ 実施例２で得た水性分散液を、ＰＥＴ極細繊維不織布上
に、厚さ０．６ｍｍとなるようコーティングし、１００
℃にて１０分乾燥した後、その上にさらに、アクリル樹
脂の粉末（平均粒径：１μ、熱軟化点：１７０℃）１０
０部、ＳＢＲラテックス［日本合成ゴム（株）製「ＪＳ
Ｒ−０５４８」、固形分濃度：５０％）４０部および水
２１０部を混合分散させ、これにカルボキシメチルセル
ロース２部を加えて、固形分濃度３５％、粘度７０００
ｃＰとした水性分散液を、厚さ０．４ｍｍとなるようコ
ーティングし、１００℃にて１０分乾燥して２層構造の
微多孔性シートを得た。Example 3 A PET ultrafine fiber non-woven fabric was coated with the aqueous dispersion obtained in Example 2 so as to have a thickness of 0.6 mm.
After drying for 10 minutes at ℃, further 10 powder of acrylic resin (average particle size: 1μ, thermal softening point: 170 ℃) 10
0 parts, SBR latex [JS manufactured by Japan Synthetic Rubber Co., Ltd.
R-0548 ", solid content concentration: 50%) 40 parts and water 210 parts are mixed and dispersed, and 2 parts of carboxymethyl cellulose is added thereto to give a solid content concentration of 35% and a viscosity of 7,000.
The cP aqueous dispersion was coated to a thickness of 0.4 mm and dried at 100 ° C. for 10 minutes to obtain a microporous sheet having a two-layer structure.
【００１６】実施例４ 実施例１で得た水性分散液を、離型紙上に厚さ０．５ｍ
ｍとなるようコーティングし、１００℃にて１０分乾燥
して微多孔性シートを得た。なお、透湿度の測定は、離
型紙を剥して試験を行った。Example 4 The aqueous dispersion obtained in Example 1 was coated on a release paper with a thickness of 0.5 m.
m to obtain a microporous sheet by coating and drying at 100 ° C. for 10 minutes. The moisture permeability was measured by peeling off the release paper.
【００１７】比較例１ ポリウレタン樹脂の粉体（平均粒径：１００μ、熱軟化
点：１４０℃）１０部、ポリウレタン樹脂エマルション
［三洋化成工業（株）製「パーマリンＵＡ−１５０」、
固形分濃度：３０％）３００部および水２８部を混合分
散させ、これにカルボキシメチルセルロース２部を加え
て、固形分濃度３０％、粘度５０００ｃＰの水性分散液
を得た。これをＰＥＴ極細繊維不織布上に、厚さ１ｍｍ
となるようコーティングし、１００℃にて１０分乾燥し
て比較シートを得た。Comparative Example 1 10 parts of polyurethane resin powder (average particle size: 100 μ, thermal softening point: 140 ° C.), polyurethane resin emulsion [“Permarin UA-150” manufactured by Sanyo Kasei Co., Ltd.,
300 parts of solid content concentration: 30%) and 28 parts of water were mixed and dispersed, and 2 parts of carboxymethyl cellulose was added thereto to obtain an aqueous dispersion having a solid content concentration of 30% and a viscosity of 5000 cP. Put this on PET ultra-fine fiber non-woven fabric, thickness 1mm
And was dried at 100 ° C. for 10 minutes to obtain a comparative sheet.
【００１８】比較例２ ナイロン樹脂の粉体（平均粒径：５０μ、熱軟化点：１
５０℃）１００部、ポリウレタン樹脂エマルション［三
洋化成工業（株）製「パーマリンＵＡ−１５０」、固形
分濃度：３０％）５部および水２４０部を混合分散さ
せ、これにカルボキシメチルセルロース３部を加えて、
固形分濃度３０％、粘度６０００ｃＰの水性分散液を得
た。これをＰＥＴ極細繊維不織布上に、厚さ１ｍｍとな
るようコーティングし、１００℃にて１０分乾燥した
が、粉体がばらばらで密着せず、シート状物は得られな
かった。Comparative Example 2 Nylon resin powder (average particle size: 50 μ, thermal softening point: 1
50 parts), 100 parts of polyurethane resin emulsion [Sanyo Chemical Co., Ltd. "Permarin UA-150", solid content concentration: 30%) 5 parts and 240 parts of water are mixed and dispersed, to which 3 parts of carboxymethyl cellulose is added. hand,
An aqueous dispersion having a solid content concentration of 30% and a viscosity of 6000 cP was obtained. This was coated on a PET ultrafine fiber nonwoven fabric so as to have a thickness of 1 mm and dried at 100 ° C. for 10 minutes, but the powder was scattered and did not adhere, and a sheet-like material was not obtained.
【００１９】性能試験 実施例１〜４および比較例１で得られたシート状物の性
能評価結果を表１に示す。Performance Test Table 1 shows the performance evaluation results of the sheet-like materials obtained in Examples 1 to 4 and Comparative Example 1.
【００２０】[0020]
【表１】 注）記号の説明 ○：良好，×：不良[Table 1] Note) Explanation of symbols ○: Good, ×: Poor
【００２１】[0021]
【発明の効果】本発明の微多孔性シートの製造方法は、
従来技術では達し得なかった下記の効果を有する。 （１）有機溶剤を含有しないので引火や毒性の危険はな
く、かつ溶剤回収設備も必要ないのでコスト的にも有利
である。 （２）親水性樹脂をしないので、得られるシート材料の
機械的性質が良好なシートが得られる。 （３）製造方法が簡便であるとともに乾燥に厳格な温度
管理が必要でなく、しかも短時間で乾燥できるので高い
生産性を確保できる。 （４）構成する樹脂粉体およびバインダー樹脂を広範囲
に選択できるので、幅広い物性の微多孔性シートを製造
できる。 本発明の方法を用いて得られる微多孔性シートは、天然
皮革代替品、繊維コーティング製品等として幅広く利用
できる。The method for producing a microporous sheet of the present invention comprises:
It has the following effects that cannot be achieved by the conventional technology. (1) Since it does not contain an organic solvent, there is no danger of ignition or toxicity, and no solvent recovery equipment is required, which is advantageous in terms of cost. (2) Since no hydrophilic resin is used, a sheet having good mechanical properties can be obtained. (3) The manufacturing method is simple, and strict temperature control is not required for drying, and moreover, it can be dried in a short time, so that high productivity can be secured. (4) Since the resin powder and the binder resin to be constituted can be selected in a wide range, a microporous sheet having a wide range of physical properties can be manufactured. The microporous sheet obtained by using the method of the present invention can be widely used as a natural leather substitute, a fiber coating product, or the like.
Claims (3)
に、固形分重量比１００：（３〜３００）で分散させ、
これを基材に付着せしめた後、乾燥することを特徴とす
る微多孔性シートの製造方法。1. An organic polymer powder (A) is replaced with an aqueous resin (B).
In a solid content weight ratio of 100: (3 to 300),
A method for producing a microporous sheet, which comprises depositing this on a substrate and then drying.
に分散させ、これを基材に付着せしめて乾燥後、この上
にさらに平均粒径が０．１〜５０μの（Ａ）を（Ｂ）に
分散させたものを付着せしめて、乾燥することを特徴と
する請求項１または２に記載の微多孔性シートの製造方
法。2. An (A) having an average particle diameter of 5 to 500 .mu.
And then depositing it on a substrate and drying it, and then depositing (A) having an average particle size of 0.1 to 50 μ dispersed in (B) thereon and drying. The method for producing a microporous sheet according to claim 1 or 2, which is characterized.
ある請求項１〜３のいずれかに記載の微多孔性シートの
製造方法。3. The method for producing a microporous sheet according to claim 1, wherein (B) is a polyurethane resin emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10467595A JPH08277341A (en) | 1995-04-04 | 1995-04-04 | Production of microporous sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10467595A JPH08277341A (en) | 1995-04-04 | 1995-04-04 | Production of microporous sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08277341A true JPH08277341A (en) | 1996-10-22 |
Family
ID=14387054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10467595A Pending JPH08277341A (en) | 1995-04-04 | 1995-04-04 | Production of microporous sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08277341A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003048939A (en) * | 2001-08-08 | 2003-02-21 | Achilles Corp | Method for producing porous polyurethane body |
| US6765590B1 (en) | 1999-08-31 | 2004-07-20 | Matsushita Electric Industrial Co., Ltd. | AV device control apparatus |
| WO2012026368A1 (en) * | 2010-08-23 | 2012-03-01 | 日東電工株式会社 | W/o emulsion, foam, and functional foam |
| WO2012029537A1 (en) * | 2010-08-31 | 2012-03-08 | 日東電工株式会社 | Foam, production method for foam, and functional foam |
| JP2012051985A (en) * | 2010-08-31 | 2012-03-15 | Nitto Denko Corp | Foam excellent in toughness and thermal resistance |
| JP2012082257A (en) * | 2010-10-07 | 2012-04-26 | Nitto Denko Corp | Heat-resistant shock-absorbing foam |
| JP2012082259A (en) * | 2010-10-07 | 2012-04-26 | Nitto Denko Corp | Heat-resistant low heat-conductive foam |
-
1995
- 1995-04-04 JP JP10467595A patent/JPH08277341A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6765590B1 (en) | 1999-08-31 | 2004-07-20 | Matsushita Electric Industrial Co., Ltd. | AV device control apparatus |
| JP2003048939A (en) * | 2001-08-08 | 2003-02-21 | Achilles Corp | Method for producing porous polyurethane body |
| WO2012026368A1 (en) * | 2010-08-23 | 2012-03-01 | 日東電工株式会社 | W/o emulsion, foam, and functional foam |
| WO2012029537A1 (en) * | 2010-08-31 | 2012-03-08 | 日東電工株式会社 | Foam, production method for foam, and functional foam |
| JP2012051985A (en) * | 2010-08-31 | 2012-03-15 | Nitto Denko Corp | Foam excellent in toughness and thermal resistance |
| JP2012082257A (en) * | 2010-10-07 | 2012-04-26 | Nitto Denko Corp | Heat-resistant shock-absorbing foam |
| JP2012082259A (en) * | 2010-10-07 | 2012-04-26 | Nitto Denko Corp | Heat-resistant low heat-conductive foam |
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